Hide Tabs (Panic Button) is an extension that let you easily hide and restore all tabs.
In order to hide (close) all tabs, please press on the toolbar icon once. Next time when you click on the toolbar button again, all hidden tabs are restored to the previous session. Please note that, this addon does not any settings or options to adjust.
Note 1: Instead of toolbar button, you can use keyboard shortcut (Alt+Shift+A) to hide and restore tabs.
note 2: In order to report bugs, please fill the bug report form in the addon's homepage (http://mybrowseraddon.com/hide-tabs.html).